ADSORPTION AND REACTION OF NITRIC OXIDE ON Si(111)-Au SURFACES

Abstract

We studied adsorption and reaction of nitric oxide on Si (111)7 × 7, 5 × 2- Au , [Formula: see text], [Formula: see text], and 6 × 6- Au surfaces with low-energy electron diffraction, Auger electron spectroscopy, and scanning tunneling microscopy (STM). We found that NO gas reacts most strongly with the 7 × 7 surface, strongly with the 5 × 2- Au surface, and little with the other Si (111)- Au surfaces. STM results indicated that the NO exposure removes adatoms and erodes the row structure on the 5 × 2- Au surface at room temperature.